package io;

import java.io.FileOutputStream;
import java.io.IOException;

public class Test {
    public static void main(String[] args) throws IOException {

        FileOutputStream fos = new FileOutputStream("fos.txt");

        for (int i =0; i < 26; i++) {
            fos.write(97+i);


        }

        System.out.println("写完了");













        fos.close();
    }
}
